Vehicle: GM / Holden / Opel Astra (AH)
Interval:
Oil - 6 months / 5000 miles / 8000 KM
Filter - 9 months / 7500 miles / 12000 KM
Out: Valvoline SynPower 0W40 (SN, A3/B4) and a Valvoline synblend media filter
In: M1 5W30 (SN, GF-5, dexos1, A1/B1, HTO-06) and Repco Z154 filter
My very first M1 oil, my first ILSAC oil, my first dexos oil, and my first A1/B1 oil
Given I spent 10 years on Penrite HPR 20W-60 and Castrol Edge 10W-60, this is a big deal for me.
So far my car has not ground itself into swarf, infact it's doing very nicely thank you.
Just call me Tig2 (ment as a compliment)